NO SEW busy book - lots of velcro, foam board, card stock & some felt. Chipboard book found at Michaels for $3 just yesterday. ;)
Of course you can add braille to almost any toy. All you need is a good braille labeler and a little space on the toy and you're good to go! But it's also exciting to find toys specifically designed for blind or visually impaired kids who are learning (or are already proficient at) braille.
Creating a texture book for students with visual impairments and multiple disabilities
FrankenThings: Cardstock Busy Book
How Sweet It Is: DIY Book of Textures (sensory book)
Texture matching is a great pre-braille activity!
Touch and feel shapes
Pay attention... these are amazing parenting techniques.
Texture cards - for more simple ideas visit http://playresource.org/ideas-inspiration/